Spontaneous Regression of a Symptomatic Cyst of the Cavum Septi Pellucidi and Vergae

Abstract

Spontaneous regression of cysts of the cavum septi pellucidi (CSP) and cavum Vergae (CV) is rare and little-discussed. The authors present their case report of this phenomenon following a severe headache in a 23-year-old female patient, in whom MRI had previously confirmed signif-icant thinning of the left lateral cyst wall. We consider this findingto be a possible predisposing factor to rupture and the spontaneous regression of such cysts. In addition to the mechanism of cystic regression, the interrelated causes of their expansion and formation will be discussed.